R. MAKAREWICZ and G. KERBER, “A method of predicting noise equivalent level value in urban structure”, Arch. Acoust., vol. 3, no. 4, pp. 231–248, Dec. 1978, Accessed: Mar. 04, 2026. [Online]. Available: https://acoustics.ippt.gov.pl/index.php/aa/article/view/3459